<!-- 优惠券中心  -->
<template>
	<s-layout title="优惠券" :bgStyle="{ color: '#f2f2f2' }">
		<su-sticky bgColor="#fff">
			<su-tabs :list="tabMaps" :scrollable="false" @change="onTabsChange" :current="state.currentTab"></su-tabs>
		</su-sticky>
		<s-empty v-if="state.pagination.total === 0" icon="/static/coupon-empty.png" text="暂无优惠券"></s-empty>
		<template v-if="state.currentTab == '0'">
			<view v-for="item in state.pagination.data" :key="item.id">
				<s-coupon-list :data="item" @tap="
            sheep.$router.go('/pages/coupon/detail', {
              id: item.id,
            })
          ">
					<template #default>
						<button class="ss-reset-button card-btn ss-flex ss-row-center ss-col-center"
							:class="item.get_status != 'can_get' ? 'border-btn' : ''" @click.stop="getBuy(item.id)"
							:disabled="item.get_status != 'can_get'">
							{{ item.get_status_text }}
						</button>
					</template>
				</s-coupon-list>
			</view>
		</template>
		<template v-else>
			<view v-for="item in state.pagination.data" :key="item.id">
				<s-coupon-list :data="item" type="user" @tap="
            sheep.$router.go('/pages/coupon/detail', {
              id: item.coupon_id,
              user_coupon_id: item.id,
            })
          ">
					<template #default>
						<button class="ss-reset-button card-btn ss-flex ss-row-center ss-col-center" :class="
                item.status == 'can_get' || item.status == 'can_use'
                  ? ''
                  : item.status == 'used' || item.status == 'expired'
                  ? 'disabled-btn'
                  : 'border-btn'
              " :disabled="item.status != 'can_get' && item.status != 'can_use'" @click.stop="
                sheep.$router.go('/pages/coupon/detail', {
                  id: item.coupon_id,
                  user_coupon_id: item.id,
                })
              ">
							{{ item.status_text }}
						</button>
					</template>
				</s-coupon-list>
			</view>
		</template>

		<uni-load-more v-if="state.pagination.total > 0" :status="state.loadStatus" :content-text="{
        contentdown: '上拉加载更多',
      }" @tap="loadmore" />
	</s-layout>
</template>

<script setup>
	import sheep from '@/sheep';
	import { onLoad, onReachBottom } from '@dcloudio/uni-app';
	import { computed, reactive } from 'vue';
	import _ from 'lodash';

	// 数据
	const pagination = {
		data: [],
		current_page: 1,
		total: 1,
		last_page: 1,
	};

	const state = reactive({
		currentTab: 0,
		pagination: {
			data: [],
			current_page: 1,
			total: 1,
			last_page: 1,
		},
		loadStatus: '',
		type: '',
	});

	const tabMaps = [{
			name: '领券中心',
			value: 'all',
		},
		{
			name: '已领取',
			value: 'geted',
		},
		{
			name: '已使用',
			value: 'used',
		},
		{
			name: '已失效',
			value: 'expired',
		},
	];

	function onTabsChange(e) {
		state.pagination = pagination;
		state.currentTab = e.index;
		state.type = e.value;
		if (state.currentTab == 0) {
			getData();
		} else {
			getCoupon();
		}
	}
	async function getData(page = 1, list_rows = 5) {
		state.loadStatus = 'loading';
		const res = await sheep.$api.coupon.list({ list_rows, page });
		if (res.code === 1) {
			let couponlist = _.concat(state.pagination.data, res.data.data);
			state.pagination = {
				...res.data,
				data: couponlist,
			};
			if (state.pagination.current_page < state.pagination.last_page) {
				state.loadStatus = 'more';
			} else {
				state.loadStatus = 'noMore';
			}
		}
	}

	async function getCoupon(page = 1, list_rows = 5) {
		state.loadStatus = 'loading';
		let res = await sheep.$api.coupon.userCoupon({
			type: state.type,
			list_rows,
			page,
		});
		if (res.code === 1) {
			let couponlist = _.concat(state.pagination.data, res.data.data);
			state.pagination = {
				...res.data,
				data: couponlist,
			};
			if (state.pagination.current_page < state.pagination.last_page) {
				state.loadStatus = 'more';
			} else {
				state.loadStatus = 'noMore';
			}
		}
	}
	async function getBuy(id) {
		const { code, msg } = await sheep.$api.coupon.get(id);
		if (code === 1) {
			uni.showToast({
				title: msg,
			});
			setTimeout(() => {
				state.pagination = pagination;
				getData();
			}, 1000);
		}
	}

	// 加载更多
	function loadmore() {
		if (state.loadStatus !== 'noMore') {
			if (state.currentTab == 0) {
				getData(state.pagination.current_page + 1);
			} else {
				getCoupon(state.pagination.current_page + 1);
			}
		}
	}
	onLoad((Option) => {
		if (Option.type === 'all' || !Option.type) {
			getData();
		} else {
			state.type = Option.type;
			Option.type === 'geted' ?
				(state.currentTab = 1) :
				Option.type === 'used' ?
				(state.currentTab = 2) :
				(state.currentTab = 3);
			getCoupon();
		}
	});
	onReachBottom(() => {
		loadmore();
	});
</script>

<style lang="scss" scoped>
	.card-btn {
		// width: 144rpx;
		padding: 0 16rpx;
		height: 50rpx;
		background: linear-gradient(90deg, var(--ui-BG-Main), var(--ui-BG-Main-gradient));
		color: #ffffff;
		font-size: 24rpx;
		font-weight: 400;
		border: none;

	}

	.border-btn {
		background: linear-gradient(90deg, var(--ui-BG-Main-opacity-4), var(--ui-BG-Main-light));
		color: #fff !important;
	}

	.disabled-btn {
		background: #cccccc;
		background-color: #cccccc !important;
		color: #fff !important;
	}
</style>